Subtract 90/5 from 21/16
1st number: 1 5/16, 2nd number: 18 0/5
21/16 - 90/5 is -267/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
90/5 = 90 × 16/5 × 16 = 1440/80 - Subtract the two like fractions:
105/80 - 1440/80 = 105 - 1440/80 = -1335/80 - After reducing the fraction, the answer is -267/16
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